This is a Carhartt WIP Active Jacket. Retail price was 42,900 yen, and it is currently sold out. It's made more sturdily than a regular Carhartt jacket, giving it a more luxurious feel. It's a size M, but it's about the same size as a Japanese L. It has a fluffy quilted lining, so you can wear it even in midwinter. See the official size chart in the image. Carhartt Carhartt Active Jacket Detroit Jacket